JPH11319667A - Side plate of size press roll in paper making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the leakage of a liq. chemical in use by providing an almost U-shaped protrusion on the inner face. SOLUTION: An almost U-shaped protrusion P is formed on the inner face of a side plate C1 , C2 , and a hole (h) for the overflow of a liq. chemical is furnished in the center. The side plate C1 , C2 is mounted on the side face of a size press roller. Consequently, when the side plate C1 , C2 is brought into contact with the side face of the size press roll, the almost U-shaped protrusion P on the inner face of the side plate C1 , C2 is in line contact. Accordingly, the adhesion of the side plate C1 , C2 to the size press roll is improved, and the liq. chemical is not leaked. Besides, a low-contact-pressure place is not left, uniform contact is obtained, and hence the chemical lees are not formed at the contact region. Further, since the contact region is strip-shaped, the edge of the protrusion P acts like a doctor, and the chemical lees depositing on the side face of the size press roll are effectively removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side plate that comes into contact with a size press roll in a chemical liquid application section of a paper machine.

[0002]

2. Description of the Related Art A size press roll of a paper machine is shown in FIG.
As shown in (a), between two rubber size press rolls (B) and (B ') having the same surface length, a chemical processing liquid, for example, polyvinyl alcohol] (F) is stored, and the size presses are made. The chemical (F) is applied to the surface of the paper (A) passing between the rolls (B) and (B ') and processed. In such surface processing of the paper (A), it is necessary to adjust the water level of the chemical solution (F). Therefore, substantially triangular plates [side plates] are provided on the side surfaces of the size press rolls (B) and (B '). (C) and (C ') are pressure-bonded by an air cylinder mechanism to be attached. In FIG. 5A, (D) is a paper roll, and (E) is a chemical pipe. FIG. 5B is a perspective view of the side plates (C) and (C ′) viewed from the front side.
A hole (h) for overflowing the chemical solution (F) is provided at the center thereof. FIG. 5C is a cross-sectional view taken along the line II ′ of FIG. Such current side plates (C) and (C ′) are configured to be in contact with the side surfaces of the size press rolls (B) and (B ′). The mechanism as a whole has the following problems.

[0003] 1). Size press roll (B),
(B ') At the time of installation, the two size press rolls (B) and (B') are installed so that the side faces are aligned, but the size press rolls (B) and (B ') and the side plate are installed. In spite of the fact that the state of attachment of (C) and (C ′) is difficult to be uniform, and the adjustment requires a lot of time, the effect cannot be improved, and the displacement generated there cannot be completely removed. 2). Size press roll (B), (B ')
Since rubber is wound on the surface, when pressurized, the side surface swells in the lateral direction and has a property of not flattening. 3). The contact surface of the side plates (C) and (C ') is deteriorated due to the rubber on the size press rolls (B) and (B') and the abrasion of the side plates (C) and (C ').
A chemical solution leaks from the gap. 4). Due to subtle deviations in the press pressure timing, the side surfaces of the size press rolls (B) and (B ') are tilted, and the state of attachment is deteriorated. As a result, a chemical solution leaks. 5). The chemical residue adheres to the low contact pressure portions of the side plates (C) and (C '), causing the side plates (C) and (C') to float and causing leakage of the chemical solution.

[0004]

SUMMARY OF THE INVENTION The present invention employs a configuration in which a side plate in contact with a size press roll in a chemical liquid application section of a paper machine is changed from a conventional surface contact state to a line contact state. It is an object of the present invention to prevent a gap caused by a shift between two rolls and a leakage of a used chemical solution due to abrasion of a side plate.

[0005]

A side plate of a size press roll and a fine adjustment mechanism in a paper machine, wherein a substantially U-shaped projection (P) is provided on the inner surface of the side plate. The size of the side plate of the size press roll in the paper machine described above.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the inner side of the side plates (C1) and (C2) of the present invention. As will be described later, the side plates (C1) and (C2) At the position of the substantially U-shaped projection (P) provided on the inner surface, a fine adjustment mechanism (S) using a screw mechanism or the like is dispersed and mounted at appropriate locations. On this inner surface, a substantially U-shaped protrusion (P) [about 2 mm in height and about 8 mm in width as an example] is provided, and a hole (h) for overflowing a chemical solution is provided in the center thereof. Normally, stainless steel material is used for the entirety of the constituent material, but other equivalent materials may be used.

FIG. 3 (a) shows the side plates (C
1) and (C2) are replaced with size press rolls (B),
It is a figure which shows the state which pressed in the arrow (W) and (W ') direction by the said air cylinder mechanism (not shown) on the side surface of (B'). Here, side plates (C) are provided on the side surfaces of the size press rolls (B) and (B ').
When 1) and (C2) come into contact, the side plate (C
The substantially U-shaped projections (P) on the inner surfaces of 1) and (C2) come into contact with each other in a line contact state. FIGS. 3B and 4 show details of the positional relationship between the side plates (C1) and (C2) arranged on the side surfaces of the size press rolls (B) and (B '). There, it is slightly downward from the center of the contact surface length (L) of the size press rolls (B) and (B ') [on the center line (M) of the size press rolls (B) and (B')]. The substantially U-shaped projections (P) of the side plates (C1) and (C2) are located. This position is a position selected in consideration of the fact that when the size press rolls (B) and (B ') are pressed, their side surfaces expand in the horizontal direction.

[0008]

According to the present invention, a side plate (C1), a side plate (C1),
When (C2) comes into contact, the side plate (C1),
Since the substantially U-shaped protrusion (P) on the inner surface of (C2) is in contact with the conventional side plates (C) and (C '),
From a so-called surface contact state where the entire inner surface is in contact, a line contact state is established in which the substantially U-shaped projection (P) provided on the inner surface is in contact, and the size of the side plates (C1) and (C2) is increased. Press roll (B),
The adhesiveness to (B ′) is improved, the leakage of the chemical solution (F) is eliminated, and the place where the contact pressure is weak is eliminated. Since this contact portion has a strip shape,
The edge of the letter-shaped projection (P) provides a doctor-like function, which has an effect of removing the adhesion of the chemical liquid residue on the side surfaces of the size press rolls (B) and (B ′).

Further, as shown in FIG. 2, a fine adjustment mechanism (such as a screw mechanism) is provided from the surface of the side plates (C1) and (C2) to the position of a substantially U-shaped projection (P) provided on the inner surface thereof. By dispersing and mounting S) at an appropriate position, the gap that cannot be adjusted can be more tightly pressed by these fine adjustment mechanisms, so that the chemical solution (F)
Leakage can be completely prevented. By providing the fine adjustment mechanism (S), the side plate (C) when replacing the size press rolls (B) and (B ') is provided.
1) The required adjustment time for mounting (C2) can be significantly reduced. In addition, the chemical solution (F)
Prevention of leakage is effective in preventing adverse effects on the working environment and the surrounding environment.

[Brief description of the drawings]

FIG. 1 is a perspective view of an inner side of a side plate according to the present invention.

FIG. 2 is a plan view of the side plate of the present invention shown in FIG. 1 as viewed from the front side.

FIG. 3 is an explanatory view showing a state where the side plate of the present invention is mounted on a size press roll.

FIG. 4 is an explanatory diagram showing details of FIG. 3 (b).

FIG. 5 is an explanatory view showing a state in which a conventional side plate is attached to a size press roll, and a perspective view and a sectional view of the side plate.

[Explanation of symbols]

 (A) Paper (B), (B ') Size press roll (C), (C'), (C1), (C2) Side plate (D) Paper roll (E) Chemical pipe (F) Chemical liquid (P) Almost U-shaped protrusion (h) Hole (S) Fine adjustment mechanism (L) Contact surface length (M) Center line

Claims (2)

[Claims] An inner surface of a side plate has a substantially U shape.
A side plate of a size press roll in a paper machine, wherein the side plate has a character-like projection. 2. A side plate of a size press roll in a paper machine according to claim 1, further comprising a fine adjustment mechanism.